Turn your Web Apps into Elite Mobile Apps with Capacitor & Native
Kerweb is the partner agency led by Julien Kermarec (+100 apps delivered). We transform your web projects into high-performing iOS & Android mobile applications, store-ready and compliant with global stores.
Is Your App Blocked or Threatened with Removal?
Google Play and Apple App Store have tightened regulatory requirements. Explore our resolution guides and benefit from our 24h-48h emergency response.
App must target Android 16 (API level 36)
Google Play requires that all active apps target Android 16 (API 36). Without this upgrade, publishing new versions and app updates is completely blocked on the Play Console.
Photo/Video Permission: Replace READ_MEDIA_IMAGES with Android Photo Picker
According to the Google Play Privacy Policy, apps targeting Android 13+ (API 33+) can no longer request the broad `READ_MEDIA_IMAGES` and `READ_MEDIA_VIDEO` permissions if the system Android Photo Picker is sufficient for the use case.
Privacy Manifests Required: Missing PrivacyInfo.xcprivacy File
Apple rejects App Store submissions for third-party apps and SDKs that do not include a `PrivacyInfo.xcprivacy` file justifying access to system APIs (File Timestamp, System Boot Time, Disk Space, User Defaults).
Apple Guideline 4.2 Rejection: Minimum Functionality & WebView Wrapping
The App Store rejects applications that look like a simple website wrapped in a WebView without providing any real native added value.
Apple Guideline 4.8 Rejection: Mandatory Sign in with Apple (SIWA) with Google Login
The Apple App Store automatically rejects any iOS app offering third-party social logins (Google Sign-In, Facebook Login, etc.) if Sign in with Apple is not offered with equivalent prominence.
GDPR Compliance for Mobile Apps & Capacitor
Mobile apps collecting user data without explicit consent or local encryption expose themselves to regulatory fines and store removal.
Cookie Consent & Apple ATT (App Tracking Transparency)
Any iOS app conducting cross-app tracking must present the native AppTrackingTransparency prompt or face immediate rejection by Apple.
Mobile Accessibility Compliance (WCAG / VoiceOver / TalkBack)
European accessibility directives mandate accessible mobile applications for visually impaired or disabled users.
Global App Store & Google Play Compliance Audit
Growing requirements from Apple and Google make submission complex with high risks of permanent rejection.
Apple Guideline 2.3.1 Rejection: Fake Reviews & Misleading Social Proof on iOS Paywalls
The Apple App Store strictly forbids displaying fabricated ratings, inflated counters (e.g., '1M+ positive reviews' or fake 5-star badges), and fake testimonials on iOS paywalls or metadata. While some apps pass initial App Review and scale to $10k+ MRR, these deceptive tactics are systematically purged during retrospective Review Sweeps, resulting in permanent developer account termination under Guideline 5.6.3.
Specialized Mobile Services for Businesses
From Web-to-Capacitor transformation to 100% Native iOS & Android development, we deliver secure, responsive, and store-ready apps.
Web ➔ Capacitor Mobile App Transformation
Transform your Web application (React, Vue, Angular, Next.js, PHP...) into a true native-feeling iOS & Android mobile app ready for the stores.
- 1 single codebase for Web, iOS, and Android
- Deployment on App Store & Google Play Console
- Access to all native hardware plugins
- Hot-code updates without store review delays
- Time-to-market divided by 3
Web ➔ Native iOS (Swift / SwiftUI)
100% native rebuild or porting in Swift & SwiftUI for an elite iOS experience and advanced Apple integrations.
- Native 120 FPS ProMotion fluidity
- Native StoreKit 2 & In-App Purchases integration
- iOS Widgets & Live Activities
- Full compliance with Apple Design Guidelines
Web ➔ Native Android (Kotlin)
Native Android development and porting in Kotlin & Jetpack Compose targeting the latest Google Play specs (Android 16 / API 36).
- Modern Jetpack Compose architecture
- Guaranteed Android 16 (API Level 36) compliance
- Native Google Play Billing v7 integration
- Memory optimization for all Android devices
Store Compliance & Emergency Rejection Fixes
24-48h emergency intervention to lift Google Play update blocks (API 36, Photo Picker) and Apple rejections (Privacy Manifests, Guideline 4.2).
- Rejection diagnosis and audit in under 4 hours
- Fixing Android Target SDK 36 (Android 16) requirements
- Native Android Photo Picker implementation
- Adding Privacy Manifests `PrivacyInfo.xcprivacy` for iOS
- Support until final store approval
Mobile Technical Excellence at Your Service
Founded by Julien Kermarec, a recognized Ionic Developer Expert (IDE), Kerweb relies on a specialized hub to deliver highly secure apps.
Julien Kermarec
Certified Ionic Developer Expert (IDE)
34 years old • Kerweb Company
"Founder of Kerweb, Julien is internationally recognized as an Ionic Developer Expert. At 34, with over 100 mobile apps deployed in production, he assists solo founders, SMBs, startups, scale-ups, and global enterprises (+100,000 employees) in their mobile and native strategy."
Trusted by Industry Leaders & Fast-Growing Scale-ups
Our team deploys mission-critical mobile solutions for enterprise engineering teams and ambitious SaaS founders.
The Team & Dedicated Expertise Hubs
Employees & Elite Contractor Network handpicked by Julien Kermarec.
Julien Kermarec
Certified Ionic Developer Expert, Lead Architect on 100+ web and mobile applications.
Native iOS Team
Apple-certified experts for native development, StoreKit 2, WidgetKit, and Privacy Manifests.
Native Android Team
Google Play Console specialists, Target SDK 36 (Android 16), and Photo Picker migrations.
Web & Capacitor Plugins Team
Senior React, Next.js, Vue, and Angular engineers building custom native bridges.
QA & Store Compliance
Emergency task force fixing App Store rejections and Google Play warnings within 24-48h.
Migrate Your App to Capacitor & Native
Have a legacy Cordova/Ionic, React Native, or Flutter app? We migrate and modernize your code without loss of features.
Migration from Ionic Cordova to Capacitor 7
Modernize your legacy Ionic app by replacing Cordova with Capacitor for modern Swift/Kotlin builds and multiplied performance. See our detailed [Capacitor vs Ionic comparison](/en/comparisons/capacitor-vs-ionic).
Migration from React Native to React + Capacitor
Reduce your mobile codebase complexity and enjoy 100% reuse with your React / Next.js Web app.
Porting an iOS Swift App to Android Kotlin
Convert your native iOS app into an exceptional native Android app using Kotlin & Jetpack Compose.
Estimate Your Web ➔ Mobile Transformation Time
Discover how much time and money you save by choosing the encapsulated Capacitor approach over a complete native rewrite.
Frequently Asked Questions About Kerweb
Everything you need to know about Capacitor transformation, native iOS/Android development, and our emergency support.
Q.What is Capacitor compared to React Native or Flutter?
Capacitor is the modern framework created by Ionic that allows you to run your Web code (React, Vue, Angular, Next.js, HTML/JS) directly inside an ultra-high-performance native container. Unlike React Native or Flutter, which require you to rewrite the UI in specific languages, Capacitor reuses 100% of your web components and CSS while giving you direct and unlimited access to native iOS (Swift) and Android (Kotlin) APIs.
Q.How does Kerweb guarantee App Store and Google Play approval?
Thanks to our founder Julien Kermarec, a certified Ionic Developer Expert, and our specialized Store compliance team, we apply strict Apple (Privacy Manifests PrivacyInfo.xcprivacy, ATT, Guideline 4.2) and Google (Target SDK 36 Android 16, Android Photo Picker) guidelines right from the development phase. If your app is rejected, our emergency unit acts within 24-48 hours.
Q.Can an existing Website or SaaS be transformed without starting from scratch?
Yes! This is Kerweb's core specialty. We take your existing web app (SaaS, e-commerce, business app), wrap it with Capacitor, add the essential native components (Push Notifications, FaceID Biometrics, offline management, Haptics), and handle the entire submission process to the Apple App Store and Google Play Store.
Q.How much does a transformation or compliance upgrade cost?
Every project is tailor-made. An urgent compliance upgrade for an app blocked on the stores (API 36 or Privacy Manifests) is generally handled as a fast-track flat-rate intervention (24-48h). A complete web-to-mobile transformation varies according to the app's size. Contact us for an instant quote.